Cardiac output is defined as the volume of blood pumped by a(n) ________ each time it contracts
A) heart
B) atrium
C) atrioventricular valve
D) ventricle
Answer: D
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The mechanism for the spread of long interspersed nuclear elements (LINEs) involves some unique features, including _____
A) translation in the cytoplasm of an mRNA that was synthesized in the nucleus B) the nuclear localization of RNA polymerase C) the transport of mRNA from the cytoplasm to the nucleus D) the use of an enzyme that cuts DNA E) the use of RNA polymerase to transcribe an mRNA
Fibroblast cells are a good model system for studying muscle differentiation because
A. they are totipotent. B. they never differentiate into muscle cells in a normally developing animal. C. they can differentiate into muscle cells in a normally developing animal. D. they express a limited number of genes. E. they have a small genome.
What is the maximum number of single covalent bonds a carbon atom can form with other elements?
A) 1 B) 2 C) 3 D) 4
Any change in the normal nucleotide sequence that codes for an amino acid is called a ___________________________________.
mutation replication translation transcription protein synthesis